function urlencode (str) {
  // http://kevin.vanzonneveld.net
  // +   original by: Philip Peterson
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: AJ
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   improved by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: travc
  // +      input by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   improved by: Lars Fischer
  // +      input by: Ratheous
  // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Joris
  // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
  // %          note 1: This reflects PHP 5.3/6.0+ behavior
  // %        note 2: Please be aware that this function expects to encode into UTF-8 encoded strings, as found on
  // %        note 2: pages served as UTF-8
  // *     example 1: urlencode('Kevin van Zonneveld!');
  // *     returns 1: 'Kevin+van+Zonneveld%21'
  // *     example 2: urlencode('http://kevin.vanzonneveld.net/');
  // *     returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
  // *     example 3: urlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
  // *     returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'
  str = (str + '').toString();

  // Tilde should be allowed unescaped in future versions of PHP (as reflected below), but if you want to reflect current
  // PHP behavior, you would need to add ".replace(/~/g, '%7E');" to the following.
  return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').
  replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
}

function urldecode (str) {
  // http://kevin.vanzonneveld.net
  // +   original by: Philip Peterson
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: AJ
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   improved by: Brett Zamir (http://brett-zamir.me)
  // +      input by: travc
  // +      input by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   improved by: Lars Fischer
  // +      input by: Ratheous
  // +   improved by: Orlando
  // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
  // +      bugfixed by: Rob
  // +      input by: e-mike
  // +   improved by: Brett Zamir (http://brett-zamir.me)
  // %        note 1: info on what encoding functions to use from: http://xkr.us/articles/javascript/encode-compare/
  // %        note 2: Please be aware that this function expects to decode from UTF-8 encoded strings, as found on
  // %        note 2: pages served as UTF-8
  // *     example 1: urldecode('Kevin+van+Zonneveld%21');
  // *     returns 1: 'Kevin van Zonneveld!'
  // *     example 2: urldecode('http%3A%2F%2Fkevin.vanzonneveld.net%2F');
  // *     returns 2: 'http://kevin.vanzonneveld.net/'
  // *     example 3: urldecode('http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a');
  // *     returns 3: 'http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a'
  return decodeURIComponent((str + '').replace(/\+/g, '%20'));
}


function base64_decode (data) {
  // http://kevin.vanzonneveld.net
  // +   original by: Tyler Akins (http://rumkin.com)
  // +   improved by: Thunder.m
  // +      input by: Aman Gupta
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   bugfixed by: Onno Marsman
  // +   bugfixed by: Pellentesque Malesuada
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // *     example 1: base64_decode('S2V2aW4gdmFuIFpvbm5ldmVsZA==');
  // *     returns 1: 'Kevin van Zonneveld'
  // mozilla has this native
  // - but breaks in 2.0.0.12!
  //if (typeof this.window['atob'] == 'function') {
  //    return atob(data);
  //}
  var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
  var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
    ac = 0,
    dec = "",
    tmp_arr = [];

  if (!data) {
    return data;
  }

  data += '';

  do { // unpack four hexets into three octets using index points in b64
    h1 = b64.indexOf(data.charAt(i++));
    h2 = b64.indexOf(data.charAt(i++));
    h3 = b64.indexOf(data.charAt(i++));
    h4 = b64.indexOf(data.charAt(i++));

    bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;

    o1 = bits >> 16 & 0xff;
    o2 = bits >> 8 & 0xff;
    o3 = bits & 0xff;

    if (h3 == 64) {
      tmp_arr[ac++] = String.fromCharCode(o1);
    } else if (h4 == 64) {
      tmp_arr[ac++] = String.fromCharCode(o1, o2);
    } else {
      tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
    }
  } while (i < data.length);

  dec = tmp_arr.join('');

  return dec;
}

function base64_encode (data) {
  // http://kevin.vanzonneveld.net
  // +   original by: Tyler Akins (http://rumkin.com)
  // +   improved by: Bayron Guevara
  // +   improved by: Thunder.m
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   bugfixed by: Pellentesque Malesuada
  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   improved by: Rafał Kukawski (http://kukawski.pl)
  // *     example 1: base64_encode('Kevin van Zonneveld');
  // *     returns 1: 'S2V2aW4gdmFuIFpvbm5ldmVsZA=='
  // mozilla has this native
  // - but breaks in 2.0.0.12!
  //if (typeof this.window['btoa'] == 'function') {
  //    return btoa(data);
  //}
  var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
  var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
    ac = 0,
    enc = "",
    tmp_arr = [];

  if (!data) {
    return data;
  }

  do { // pack three octets into four hexets
    o1 = data.charCodeAt(i++);
    o2 = data.charCodeAt(i++);
    o3 = data.charCodeAt(i++);

    bits = o1 << 16 | o2 << 8 | o3;

    h1 = bits >> 18 & 0x3f;
    h2 = bits >> 12 & 0x3f;
    h3 = bits >> 6 & 0x3f;
    h4 = bits & 0x3f;

    // use hexets to index into b64, and append result to encoded string
    tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
  } while (i < data.length);

  enc = tmp_arr.join('');

  var r = data.length % 3;

  return (r ? enc.slice(0, r - 3) : enc) + '==='.slice(r || 3);

}


function rawurldecode (str) {
  // http://kevin.vanzonneveld.net
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // +      input by: travc
  // +      input by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: Ratheous
  // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
  // %        note 1: Please be aware that this function expects to decode from UTF-8 encoded strings, as found on
  // %        note 1: pages served as UTF-8
  // *     example 1: rawurldecode('Kevin+van+Zonneveld%21');
  // *     returns 1: 'Kevin+van+Zonneveld!'
  // *     example 2: rawurldecode('http%3A%2F%2Fkevin.vanzonneveld.net%2F');
  // *     returns 2: 'http://kevin.vanzonneveld.net/'
  // *     example 3: rawurldecode('http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a');
  // *     returns 3: 'http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a'
  // *     example 4: rawurldecode('-22%97bc%2Fbc');
  // *     returns 4: '-22—bc/bc'
  return decodeURIComponent(str + '');
}


function rawurlencode (str) {
  // http://kevin.vanzonneveld.net
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // +      input by: travc
  // +      input by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: Michael Grier
  // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
  // +      input by: Ratheous
  // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Joris
  // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
  // %          note 1: This reflects PHP 5.3/6.0+ behavior
  // %        note 2: Please be aware that this function expects to encode into UTF-8 encoded strings, as found on
  // %        note 2: pages served as UTF-8
  // *     example 1: rawurlencode('Kevin van Zonneveld!');
  // *     returns 1: 'Kevin%20van%20Zonneveld%21'
  // *     example 2: rawurlencode('http://kevin.vanzonneveld.net/');
  // *     returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
  // *     example 3: rawurlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
  // *     returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'
  str = (str + '').toString();

  // Tilde should be allowed unescaped in future versions of PHP (as reflected below), but if you want to reflect current
  // PHP behavior, you would need to add ".replace(/~/g, '%7E');" to the following.
  return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').
  replace(/\)/g, '%29').replace(/\*/g, '%2A');
}